Sewing machine



FIG. 1 is a front right perspective view of a sewing machine bearing the design;

FIG. 2 is a front left perspective view of the sewing machine according to FIG. 1;

FIG. 3 is a front view of the sewing machine according to FIG. 1;

FIG. 4 is a rear view of the sewing machine according to FIG. 1;

FIG. 5 is a left side view of the sewing machine according to FIG. 1;

FIG. 6 is a right side view of the sewing machine according to FIG. 1;

FIG. 7 is a top plan view of the sewing machine according to FIG. 1; and,

FIG. 8 is a bottom plan view of the sewing machine according to FIG. 1.

The broken lines shown in the drawings form no part of the claimed design. 

CLAIM The ornamental design for a sewing machine, as shown and described. 